Abstract: The purpose of the study was to investigate the students and teachers perspectives on the new 10th-grade English textbook. In order to complete this study, the researcher employs both quantitative and qualitative methods. The investigation was conducted at a high school in Vietnam in which all 200 tenth-graders and five English instructors using the new textbook participated in the study in order to evaluate the textbook using total sampling techniques. Results of the study revealed positive feedbacks of the new texbook in teachers and students perspectives and proposed recommendations for the application of the textbook in this particular teaching context.